Depends. At work I use two but really the 2nd one just ends up becoming a spotify or mail window. If you are using an IDE for development (if you are even a d

Depends. At work I use two but really the 2nd one just ends up becoming a spotify or mail window. If you are using an IDE for development (if you are even a developer) then you might want two but me using Sublime at home.. I'm totally fine with just the built-in display.